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TI-2020-01884 Aliases CVE-2020-1960GHSA-6g88-99wj-8mgg

Injection in Apache Flink

Priority LOW 23CWE-74Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
High
Impact type
—
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat.

Summary

A vulnerability in Apache Flink (1.1.0 to 1.1.5, 1.2.0 to 1.2.1, 1.3.0 to 1.3.3, 1.4.0 to 1.4.2, 1.5.0 to 1.5.6, 1.6.0 to 1.6.4, 1.7.0 to 1.7.2, 1.8.0 to 1.8.3, 1.9.0 to 1.9.2, 1.10.0) where, when running a process with an enabled JMXReporter, with a port configured via metrics.reporter.reporter_name>.port, an attacker with local access to the machine and JMX port can execute a man-in-the-middle attack using a specially crafted request to rebind the JMXRMI registry to one under the attacker's control. This compromises any connection established to the process via JMX, allowing extraction of credentials and any other transferred data.

Why it matters now

EPSS 0.00863 58th percentileScored 2026-11-07
Fix Fixed org.apache.flink:flink-core (Maven): 1.9.3, 1.10.1Red Hat: 1 advisory

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—Apache FlinkApache Flink 1.1.0 to 1.1.5, 1.2.0 to 1.2.1, 1.3.0 to 1.3.3, 1.4.0 to 1.4.2, 1.5.0 to 1.5.6, 1.6.0 to 1.6.4, 1.7.0 to 1.7.2, 1.8.0 to 1.8.3, 1.9.0 to 1.9.2, 1.10.0—No fix listedCNA
—org.apache.flink:flink-core (Maven)before 1.9.31.9.3Patch availableGHSA-6g88-99wj-8mgg
—org.apache.flink:flink-core (Maven)1.10.0 to before 1.10.11.10.1Patch availableGHSA-6g88-99wj-8mgg
  • Apache Flink Vendor— Affected Apache Flink 1.1.0 to 1.1.5, 1.2.0 to 1.2.1, 1.3.0 to 1.3.3, 1.4.0 to 1.4.2, 1.5.0 to 1.5.6, 1.6.0 to 1.6.4, 1.7.0 to 1.7.2, 1.8.0 to 1.8.3, 1.9.0 to 1.9.2, 1.10.0 Fixed in — No fix listed CNA
  • org.apache.flink:flink-core (Maven) Vendor— Affected before 1.9.3 Fixed in 1.9.3 Patch available GHSA-6g88-99wj-8mgg
  • org.apache.flink:flink-core (Maven) Vendor— Affected 1.10.0 to before 1.10.1 Fixed in 1.10.1 Patch available GHSA-6g88-99wj-8mgg

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:apache:flink:*:*:*:*:*:*:*:*1.1.0 – 1.1.5; 1.2.0 – 1.2.1; 1.3.0 – 1.3.3; 1.4.0 – 1.4.2; 1.5.0 – 1.5.6; 1.6.0 – 1.6.4; 1.7.0 – 1.7.2; 1.8.0 – 1.8.3; 1.9.0 – 1.9.2VulnerableApache
cpe:2.3:a:apache:flink:1.10.0:-:*:*:*:*:*:*1.10.0VulnerableApache
  • cpe:2.3:a:apache:flink:*:*:*:*:*:*:*:* Versions 1.1.0 – 1.1.5; 1.2.0 – 1.2.1; 1.3.0 – 1.3.3; 1.4.0 – 1.4.2; 1.5.0 – 1.5.6; 1.6.0 – 1.6.4; 1.7.0 – 1.7.2; 1.8.0 – 1.8.3; 1.9.0 – 1.9.2 Vulnerable ·Apache
  • cpe:2.3:a:apache:flink:1.10.0:-:*:*:*:*:*:* Versions 1.10.0 Vulnerable ·Apache

Remediation

  • Fix · GHSA-6g88-99wj-8mgg org.apache.flink:flink-core (Maven) Fixed in 1.9.3 Advisory →
  • Fix · GHSA-6g88-99wj-8mgg org.apache.flink:flink-core (Maven) Fixed in 1.10.1 Advisory →

Red Hat 1 advisory

  • RHSA-2020:5568 Released 2020-12-16 · Red Hat rating Important
    Red Hat Fuse 7.8.0 release and security update
    • Red Hat Fuse 7.8.0

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Fuse 7.8.0Fixed RHSA-2020:5568

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-1960
  2. 2026-10-03 Alias added: GHSA-6g88-99wj-8mgg

References

Patch 1

Advisory 1

Other 6

  • TI-2020-13268 Apache Flink directory traversal attack: reading remote files through the REST API KEVCVSS 3.1CRITICAL 9.1
  • TI-2020-13267 Apache Flink directory traversal attack: remote file writing through the REST API CVSS 3.1HIGH 7.5
  • TI-2026-27347 Apache Flink: Remote code execution via SQL injection in code generation CVSS 3.1HIGH 8.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences